Chapter 713: Going to College (Seventh)

"The burning of the sun involves nuclear reaction, that is, the deterrence of human force. Let's talk about this later," Leo said, "As for the gods and the astral realms, I'm also wondering. If you say they are on the moon, I'm not sure if your planet has only one satellite. After all, the souls didn't have time to see clearly at that time, but I don't think it's a possibility. The elf myth says that the moon god is on the moon. It's impossible for the earth god and the human light god to hide on it, right? Of course, I don't think they can stay on the sun. I guess it's more

Planets close to the sun or planets, or even comets, can prove why gods sometimes are not. However, these are all speculations and we need to prove them together! Including all other planes, they should be planetary satellites or asteroids, but there are too many people in your solar system. According to this idea, the underworld may be planets far away from the sun, the abyss of the demon world, and it should be closer to the sun, so it will be so hot, and there are magma and sulfur all over the land..."

I took all these in my notes and said, "I want to participate in research on these topics! I will give me another notebook!"

Leo said: "I am very pleased to see you so seriously..."

I said, "Don't you remember it yourself?"

Leo took out a "mobile phone" and said, "I have recorded it all, it's simpler than yours!"

I said, "Okay, everything here is still built by you anyway."

Leo said: "The main reason is that you don't understand its principles and you can't use it."

I said, "I don't mean that, it's good to take notes, and I feel more at ease."

On the picture, next to the earth, the moon and other planets are crowded together, and it is indeed not as big as the sun.

Then, the picture began to move away again, the sun quickly became smaller, shrinking to the lower left corner of the picture, and the Earth and other planetary satellites shrank to invisible. Then, a light blue "sun" that was thousands of times larger than the sun occupied the main part of the picture.

Leo explained: "This is the size of other stars, which are much smaller than the sun, so I won't let you see it. I forgot what this star is called. It's very big, but..."

Before he finished speaking, the light blue star also became smaller, and the sun was as small as the earth just now, so it was impossible to meet it. A huge light orange star once again occupied the center of the picture.

Leo explained lightly: "This is less than the largest star observed so far. The radius is more than 2,000 times that of the sun, and the volume difference is about 4 billion times..."

I saw that my hair stood up: "This is so big..."

Leo said: "Don't worry, the bigger the star, the shorter the lifespan. If this kind of star is not alive for 100 million years, it is no problem for our sun to live for 100 billion years. Dwarf stars smaller than the sun are said to live for 100 billion years."

I said, "I'm afraid this unit is commonly used in the universe, right?"

Leo said: "It's almost the same, but sometimes it's not enough, such as astronomical units, the speed of light and light years... I'll tell you later, especially the speed of light, which is related to astronomy, physics, and even mathematics..."

I said, "No wonder you said the universe is very big..."

Leo said: "It's not only big, but also empty. Don't look at the stars as big as a star. In fact, all matter is scattered in it, just like grabbing a handful of sand and throwing it in the air. It's insignificant! The entire universe is almost empty, so it is called space in Chinese!"

Space, the universe, two words kept flashing in my mind.

At this moment, the picture has changed again.

In the picture, a shiny disc-shaped vortex appeared, and then it began to "swallow" the stars!

To be precise, this "disk" does not swallow the star in one bite, but tear it away and deform it, pulling out a rotating spiral of flame, and sucking it into the body little by little.

"This thing is called a black hole, which is something that humans on Earth have not yet understood," Leo said. "According to Newton's law of mechanics and the theory behind it, when the ratio of volume to mass, that is, density, is large enough to a certain limit, the attraction to external objects will become infinite, and thus become a black hole, devouring everything!"

"Black hole..." I looked at Yingying's glowing disc and said, "Isn't it color?"

"That was added by me, I'm afraid you can't see it clearly. In fact, it has no color, because even the light cannot escape his devour, and no one can see it!" Leo said, "Humans can only guess his approximate position through instruments to observe the changes in the surrounding universe's celestial bodies!"

"How did such a terrible thing come from?" I asked.

"At present, it is the heavy core produced by some stars that have burned out, which caused the core to collapse. I said, the Earthlings are still studying, just like you sighed at the sea and the starry sky. We have just crossed the ocean and flew outside the planet. Many things are just being studied. Don't be afraid. The black hole is still far away from our planet, otherwise the main plane will no longer exist. I doubt that if those gods were aliens, it is likely that their planet was threatened by the black hole and ran away from you..."

I was shocked again.

"This is just my guess, we need to prove it together," Leo said. "Come on, don't think so far, go back to the planet and see the technological development of the earth..."

The picture flashed rapidly and returned to the vicinity of the earth and the moon.

I saw something flying out of the earth and landing on the moon.

It was strange to hold things, like an irregular cylinder with sails hanging on both sides.

After landing, two humans walked out of the barrel, who were very bloated and wrapped tightly, and partly closed with glass.

"It's not long before humans landed on the moon," Leo said. "There is no oxygen here, the air pressure is low, and the temperature difference is large. People cannot survive. In fact, except for the surface of the planet, the universe is not suitable for human survival. You can understand that if you leave the planet, life is basically dead... No, it is an ordinary life, and those with magic element energy may be able to transcend this limitation, such as the Demons of the Gods!"

I said, "That is, there is no oxygen in the universe?"

"It's not just oxygen?" Leo said, "Except for the first few in the periodic table, almost all the ones behind gather around the sun... Well, the periodic table, I mentioned it in the book "Basic Chemistry and Alchemy", but I didn't remember it all myself. In addition, I'm not sure whether your world has the same elements, and I'm not sure even microscopic particles. Moreover, the magic element energy is the biggest domineering, because these energy on Earth has been proven to not exist, but your world does have these things..."

I stopped taking notes and asked him, “How did you feel when you first realized these problems?”

Leo also stopped and said, "I feel? Well, I really want to become stronger quickly and figure out these problems..."

I said, "If I were you, I would probably just go crazy..."

Leo said: "Isn't that just going to be possessed? As a rational otaku with a scientific spirit, how could he be controlled by these things? There seemed to be no scientist who once said that if there were really gods and demons, heaven and hell, he would go and take a look at it with his own eyes, broaden his horizons, and study gods and demons thoroughly, and see why they would not take humans seriously!"

"Is there any such scientist?" I was a little surprised. This was not a simple blasphemy, but a kind of bold statement that was so confident that he was arrogant and arrogant, but also had some truths.

"I can't remember clearly, but there must be such a person." Leo said, "And, from a certain perspective, the magician is also another type of scientist, especially the guys like Santas's Tari. They are not bound by secular traditions and even dare to do things like dissecting corpses and harboring orcs. They have the spirit of exploration that does not have emotions but only studies the laws!"

"Santas is only considered an alien magician, right?" I said, "Of course, I am also an alien..."

"We are all." Leo said, "Okay, watch the movie quickly. If we were really on Earth, we would have been scolded by other audiences long ago..."

The humans landed on the moon planted a flag, collected some dust and stones on the surface of the moon and went back. Our eyes approached the earth. In the sky and above the clouds, I saw more cylinder flying objects with symmetrical sails inserted.

"This is an artificial satellite, as the name suggests, it is made by humans. It is different from the naturally formed one of the moon. Its function is to monitor high altitudes and the earth and convey various information." Leo said.

I watched hundreds of satellites almost surrounded the earth and said, "Is it like a tower spirit?"

Leo said: "It's almost the same, but Taling has a small range and high accuracy, while artificial satellites have a large range and low accuracy. However, with more quantities, the accuracy can also be improved..."

"It seems that everyone on earth does not have much privacy guarantee..." I said.

"At least, when you eat, sleep, go to the toilet or do something you don't want to be seen, you will be seen." Leo said, "But I can understand why the people in the mage tower don't regard the tower spirit as human beings. After all, they won't have psychological burden when using the toilet. Do you still remember? On the first day of entering, Johnny's attitude towards the tower spirit was not very good. I have observed that no one except you see the tower spirit as human beings."

I smiled and said, "This is your plan again..."
Chapter completed!